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Home ‣ Digital Electronics ‣ Digital Arithmetic Operations and Circuits See What Others Are Saying!
  • Question

  • When the 2's-complement system is used, the number to be subtracted is changed to its 2's complement and then added to the minuend.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • More questions

    • 1. What distinguishes the look-ahead-carry adder?

    • Options
    • A. It is slower than the ripple-carry adder.
    • B. It is easier to implement logically than a full adder.
    • C. It is faster than a ripple-carry adder.
    • D. It requires advance knowledge of the final answer.
      • Discuss
    • 2. CMOS stands for "complementary metal-oxide semiconductors" and the FETs are normally enhancement mode devices.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. An astable multivibrator is sometimes referred to as a clock.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. When the output of the NOR gate S-R flip-flop is Q = 0 and , the inputs are:

    • Options
    • A. S = 1, R = 1
    • B. S = 1, R = 0
    • C. S = 0, R = 1
    • D. S = 0, R = 0
      • Discuss
    • 5. What is the maximum time required before a dynamic RAM must be refreshed?

    • Options
    • A. 2 ms
    • B. 4 ms
    • C. 8 ms
    • D. 10 ms
      • Discuss
    • 6. For a three-input NOR gate, with the input waveforms as shown below, which output waveform is correct?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
      • Discuss
    • 7. The noise immunity of a logic circuit refers to the circuit's ability to tolerate noise by causing spurious charges in the output voltage.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The main advantage of bipolar (TTL) memories over MOS memories is speed.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. A very critical dimension in project management is ________.

    • Options
    • A. cost
    • B. skill
    • C. time
    • D. personnel
      • Discuss
    • 10. A counter-ramp ADC stops counting when ________.

    • Options
    • A. the input voltage equals the DAC staircase voltage
    • B. the counter reaches a maximum count
    • C. the input voltage equals 5 volts
    • D. the DAC staircase voltage equals 5 volts
      • Discuss

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